Analyze nature and frequency of elements of the " art, memory and life " garden used as landmarks by Alzheimer's disease patients

Study the characteristics of the elements that contributed to decision-making regarding spatial orientation, the cognitive map, correlations between success in experimental, neuropsychological assessment in Alzheimer disease and healthy control subjects.

Identification and characterization of patterns of correlated brain activity measured by MEG and the Orasi SNI test that differ consistently (e.g. at all evaluation time points) between HC and AD subjects

Identification and characterization of patterns of correlated brain activity measured by MEG and the Orasi SNI test that differ across time points within single subjects and across groups of HC and AD subjects

Identification and characterization of Orasi SNI test features that correlate with independent measures of cognitive function based on functional testing (ADAS-Cog sum of boxes, and MMSE raw score, One Card Learning Test)